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parser: expose a list of symbols

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* src/parse-gram.y (%type): Also use current_class.
(symbol_decl.1): Rename as...
(symbols.1): this.
This commit is contained in:
Akim Demaille
2020-02-19 18:51:21 +01:00
parent e50ec28153
commit 7eca26e87b
1 changed files with 13 additions and 10 deletions
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23
src/parse-gram.y
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@@ -449,7 +449,7 @@ grammar_declaration:
; ;
%type <symbol_list*> nterm_decls symbol_decls symbol_decl.1 %type <symbol_list*> nterm_decls symbol_decls symbols.1
token_decls token_decls_for_prec token_decls token_decls_for_prec
token_decl.1 token_decl_for_prec.1; token_decl.1 token_decl_for_prec.1;
symbol_declaration: symbol_declaration:
@@ -463,8 +463,9 @@ symbol_declaration:
current_class = unknown_sym; current_class = unknown_sym;
symbol_list_free ($syms); symbol_list_free ($syms);
} }
| "%type" symbol_decls[syms] | "%type" { current_class = pct_type_sym; } symbol_decls[syms]
{ {
current_class = unknown_sym;
symbol_list_free ($syms); symbol_list_free ($syms);
} }
| precedence_declarator token_decls_for_prec[syms] | precedence_declarator token_decls_for_prec[syms]
@@ -630,30 +631,32 @@ token_decl_for_prec:
// A non empty list of typed symbols (for %type). // A non empty list of typed symbols (for %type).
symbol_decls: symbol_decls:
symbol_decl.1[syms] symbols.1[syms]
{ {
$$ = $syms; $$ = $syms;
} }
| TAG symbol_decl.1[syms] | TAG symbols.1[syms]
{ {
$$ = symbol_list_type_set ($syms, $TAG); $$ = symbol_list_type_set ($syms, $TAG);
} }
| symbol_decls TAG symbol_decl.1[syms] | symbol_decls TAG symbols.1[syms]
{ {
$$ = symbol_list_append ($1, symbol_list_type_set ($syms, $TAG)); $$ = symbol_list_append ($1, symbol_list_type_set ($syms, $TAG));
} }
; ;
// One or more token declarations (for %type). // One or more symbols.
symbol_decl.1: symbols.1:
symbol symbol
{ {
symbol_class_set ($symbol, pct_type_sym, @symbol, false); if (current_class != unknown_sym)
symbol_class_set ($symbol, current_class, @symbol, false);
$$ = symbol_list_sym_new ($symbol, @symbol); $$ = symbol_list_sym_new ($symbol, @symbol);
} }
| symbol_decl.1 symbol | symbols.1 symbol
{ {
symbol_class_set ($symbol, pct_type_sym, @symbol, false); if (current_class != unknown_sym)
symbol_class_set ($symbol, current_class, @symbol, false);
$$ = symbol_list_append ($1, symbol_list_sym_new ($symbol, @symbol)); $$ = symbol_list_append ($1, symbol_list_sym_new ($symbol, @symbol));
} }
; ;